Question
1. Study the block diagram of the Tuned Radio Frequency Receiver below.
2. Make a step a by step discussion on how tuned radio frequency works.
Detector
Amplifier
Guide Questions:
1. How does the detector affect the whole function of the tuned radio frequency
receiver circuit?
2. Why does the tuned circuit be amplified?
3. What made the tuned radio frequency receiver circuit different from the simple
radio receiver circuit?
The rubric for scoring your answers is similar with the rubric in activity 1.
Answer
1. The detector is responsible for converting the modulated radio frequency signal into an audio signal that can be heard through the speaker. Without the detector, the radio frequency signal cannot be demodulated and the audio signal cannot be produced.
2. The tuned circuit needs to be amplified to compensate for the losses in the circuit and to provide enough signal strength for the detector to work properly. The amplifier also helps to improve the selectivity of the circuit by amplifying only the desired frequency and rejecting unwanted frequencies.
3. The tuned radio frequency receiver circuit is different from the simple radio receiver circuit because it uses a tuned circuit to select a specific frequency and amplify it before it is detected. This allows for better selectivity and sensitivity compared to the simple radio receiver circuit.